How do we add Date & Time to a field (like the header/footer!) in Pages, for iOS?

I wish this was simple! I’ll attach a screenshot, but I am seriously not figuring how to add a simple date and time stamp to Pages for iOS. It should be as simple as click and select, right? But, no.

Please, someone tell me how to easily add a date and/or time stamp to my document.

For now, I will type it. But that is udder bullocks imho that Apple still hasn’t got their stuff together.

Thanks Apple.